912 results about "Biological filter" patented technology

The invention discloses a modified ceramsite filler based on iron-sulfur autotrophic denitrification as well as a preparation method and application thereof, and belongs to the technical field of sewage treatment. The modified ceramsite filler based on iron-sulfur autotrophic denitrification is ceramsite loaded with a modifier; the modifier comprises the following components: iron powder, pyrite powder and biochar; the mass ratio of the iron powder to the pyrite powder to the charcoal is 3: 6: 1; the mass ratio of the modifier to the ceramsite is 1.5: 1. The iron powder (zero-valent iron), the pyrite powder and the biochar are combined to modify the common ceramsite, the denitrification effect of the biofilter on low C / N wastewater is greatly improved, and under typical experimental conditions, the denitrification rate of the biofilter containing the modified ceramsite filler on low-carbon-nitrogen-ratio wastewater is improved by 90% or above compared with that of a common ceramsite biofilter. And the modified ceramsite filler prepared by the invention can obviously improve the phosphorus removal effect of the biological filter on wastewater with low carbon nitrogen ratio.

The invention relates to the technical field of air pollution prevention and control, in particular to a sewage deodorization system and method based on a biological filter, and the system comprises a data acquisition module, a system preprocessing module, a system deodorization effect evaluation module, a system operation performance evaluation module, a system efficiency comprehensive analysis and processing module and a system database. According to the sewage deodorization system and method based on the biological filter, the system performance and the deodorization efficiency are comprehensively analyzed, and comprehensive system energy efficiency evaluation is provided. By analyzing the two indexes, the strong and weak points of the system can be identified, so that the resource configuration is optimized, and the overall efficiency of the system is improved. The deodorization effect and the operation performance are comprehensively considered, and more comprehensive and more accurate decisions can be made. By improving the deodorization effect, adverse effects on the surrounding environment and residents can be reduced. Meanwhile, the good operation performance can help to reduce the maintenance and operation cost.

The invention discloses a treatment process of high-nitrile-content wastewater, and belongs to the technical field of wastewater treatment. The method comprises the following steps: (1) pretreatment: adding an alkaline substance into the high-nitrile-content wastewater to adjust the pH value of the wastewater to 9-12, and adding sodium percarbonate for reaction to obtain pretreated wastewater; and (2) sequentially treating the pretreated wastewater through an A / A / O process and a biological filter EBF, and discharging after reaching the standard. According to the treatment process, the treatment cost of the high-nitrile-content wastewater can be effectively reduced, the content of nitrile compounds in the wastewater can be rapidly reduced, the biodegradability of the wastewater can be remarkably improved, and the wastewater can be discharged after reaching the standard.

The invention belongs to the field of wastewater treatment. The invention provides a manganese-carbon composite controlled-release material as well as a preparation method and application thereof. The manganese-carbon composite controlled-release material comprises the following components: a manganese-rich mineral, a natural plant carbon source, a cementing material, aggregate, an additive and a foaming agent. The manganese-carbon composite controlled-release material disclosed by the invention can regulate and control the carbon release and manganese circulation process by virtue of the interaction between manganese and carbon, so that the electron transfer and mass transfer efficiency is remarkably improved, synergistic denitrification is realized, the overall denitrification efficiency is remarkably improved, and synchronous nitrogen and phosphorus removal and self-adaptive continuous denitrification are realized. The raw materials required for preparing the manganese-carbon composite controlled-release material are environment-friendly and low in price, the preparation process is simple, the preparation cost is low, and the manganese-carbon composite controlled-release material can be applied to filler in a submerged area of an artificial wetland, a biological filter and a biological retention system, and can be widely applied to application scenes such as tail water advanced treatment of a sewage treatment plant, rural agricultural sewage treatment and initial rainwater purification.

A microbial electrochemical filter and a method for using same to remove iron, manganese and ammonia nitrogen from underground water, which belong to the technical field of wastewater treatment. The filter and the method solve the problem of existing biological filters having poorer operation performance and stability under oligotrophic conditions. The microbial electrochemical filter comprises a cylinder (1), an electrochemical system, and a filter column (4), wherein the electrochemical system and the filter column (4) are arranged in the cylinder (1); the electrochemical system is arranged above the filter column (4); the filter column (4) consists of a carrier, a surface of which is covered with a biological film; and a water outlet (8) is provided in a lower portion of a side wall of the cylinder (1), and an overflow port is provided in an upper portion of the side wall of the cylinder (1). In the method, by means of an electro-oxidation process, some pollutants are removed before entering a filter column (4), thus reducing the bioremoval pressure in the filter column (4); the abundance and carbon sequestration capability of autotrophic microbes in a biological filter are enhanced by means of an electrochemical system, thereby providing an additional carbon source and an additional electron acceptor for the autotrophic biological filter, and prompting the growth and metabolism of biological communities; and the microbial electrochemical filter provides conditions for the growth of heterotrophic iron-manganese oxidizing flora, and achieves the generation and coverage of more iron-manganese active oxide films on the surfaces of filter materials.

The invention discloses an urban road rainwater runoff stage treatment system and method, and relates to the technical field of urban rainwater pollution treatment. In order to solve the problems that an existing system is difficult to monitor multi-index water quality in real time, the pollution degree is accurately recognized, and distribution control lacks dynamics, the system is provided with a multi-source spectrum water quality monitor at the tail end of a pipe network, turbidity, COD, TOC and heavy metal concentration are monitored in real time, rainfall intensity data are accessed into a control center, the pollutant load instantaneous rate L is calculated through a weighted summation formula, and the real-time monitoring of the pollution degree is achieved. A controllable flow distribution module in the flow distribution well distributes the rainwater to an enhanced treatment unit, a biological aerated filter system or a horizontal flow sedimentation tank, wherein the enhanced treatment unit comprises a rotational flow sand setting unit, an electrochemical heavy metal degradation unit and a chemical flocculation unit. The system is mainly used for realizing quality-divided efficient treatment and resource recycling of rainwater and guaranteeing the safety of a receiving water body.

The utility model belongs to the field of filter material temper mills, and particularly relates to a filter material temper mill for a biological aerated filter, which comprises a base, grooves are formed in the two sides of the top end of the base, and a leveling mechanism is arranged at the top end of the base. The leveling mechanism comprises a motor, the motor is arranged in a groove in one side of the top end of the base, and the rear end of the motor is fixedly connected with one side of the groove; through the design of the leveling mechanism, the function of conveniently dismounting a leveling assembly is achieved, and the problems that an existing leveling machine is not provided with an assembly convenient to replace for the leveling assembly, and due to the fact that the leveling assembly needs to conduct leveling work in sewage for a long time during work, after long-time use, the leveling assembly is not convenient to replace are solved. The problems that the flattening assembly is damaged and needs to be replaced due to the fact that the flattening assembly is extremely prone to being corroded and the like are solved, but an existing device is large in replacement difficulty and not easy to operate are solved, and the convenience during disassembly is improved.

The invention discloses a multipurpose biological filter treatment device, which mainly comprises a water distribution tank, a water inlet pipe, a water outlet pipe, a return pipe, an aeration pipe, a filter material, a filter plate, a baffle plate, a membrane assembly, an overflow port and a tank body, and is characterized in that the baffle plate is arranged in the middle of the tank body to divide the tank body into a filler area and a reaction area; the filter plate is arranged at the bottom of the filler area, two layers of fillers are arranged on the upper layer of the filter plate, the lower layer of the filter plate is quartz sand with the particle size of 0.5-2mm, and the upper layer of the filter plate is an AFM active filter material; and the membrane component is arranged in the reaction area and adopts a silicon carbide flat membrane with the filtering precision of 0.1-2 microns. Aiming at the defects of an original sewage treatment device, the invention provides a sewage treatment filter device which is good in treatment effect and low in operation energy consumption, can be used for water pretreatment of a micro-polluted water source and can also be used for advanced treatment of sewage.

The invention discloses an ecological fish culture system capable of automatically purifying water. Comprising a user terminal, a cloud data center platform, a purification system, a real-time water quality detection module, a data acquisition and transmission module, an intelligent data analysis and management module, a remote monitoring and early warning module, an abnormal early warning processing module, a water purification linkage module, a data analysis visualization module and a culture system. Compared with the prior art, the aquaculture system has the advantages that the aquaculture system is added, circulating aquaculture of ecological fishes is achieved, a filter tank is established through a biological filter tank module in the aquaculture system by means of microbial populations, and the ecological fishes can be cultured in a circulating mode through the biological filter tank module in the aquaculture system, so that the aquaculture efficiency is improved, and the aquaculture cost is reduced. Harmful substances are converted into harmless substances through specific microbial populations, the harmful substances in water are absorbed by aquatic plants through the multi-stage purification module, and suspended particles and impurities in the water are filtered through mechanical objects such as a filter screen and filter cotton.

The invention discloses a method for treating printing and dyeing wastewater based on an aerobic granular sludge technology, which comprises the following steps: culturing and domesticating aerobic granular sludge: adopting a sequencing batch activated sludge reactor with a large height-diameter ratio, adding high-load simulated printing and dyeing wastewater into the reactor, and starting to culture the aerobic granular sludge; treating the printing and dyeing wastewater by using the aerobic granular sludge: treating the printing and dyeing wastewater by using the cultured and domesticated aerobic granular sludge; carrying out biological aerated filter pretreatment: carrying out starting and biofilm formation by adopting simulated wastewater; advanced treatment with a double-membrane process: treating the effluent with the double-membrane process, wherein ultrafiltration adopts a high-strength hollow fiber membrane module, and the operation mode is an external pressure mode; an anti-pollution membrane assembly with pollution resistance, high desalination rate and high water yield is adopted for reverse osmosis, and by adjusting operation parameters of a double-membrane process, the effluent quality meets the water quality requirement of recycled water in the textile dyeing and finishing industry.

The present invention relates to an aerated biological filter with good purification effect, comprising: a tank body, a filter material layer arranged in the tank body, a water outlet pipe arranged at the top of the tank body, a water inlet pipe arranged at the bottom of the tank body, and an aeration mechanism arranged below the filter material layer, wherein the aeration mechanism comprises: a fixing frame fixed in the tank body, an aeration bracket rotatably arranged on the fixing frame, an air inlet pipe connected to the bottom of the aeration bracket, and a rotary drive motor. The aeration mechanism of the present invention is provided with an aeration bracket with an air inlet cavity arranged inside, wherein a plurality of air outlet rods connected to the air inlet cavity are arranged around the top of the aeration bracket, and a plurality of air outlet holes are staggeredly distributed on each air outlet rod, and the aeration bracket is driven to rotate by a rotary drive motor, so that the floating bubbles formed by the plurality of air outlet rods continuously change the floating path, thereby improving the purification effect of the aerated biological filter on sewage.

The invention relates to the technical field of sewage treatment equipment, in particular to an electrolytic biological filter system for rapid treatment of overflow pollution and an operation method, a bioelectrochemical system is coupled with a biological aerated filter to form the electrolytic biological filter system for rapid treatment of overflow pollution; the rapid electron transfer characteristic of a bioelectrochemical system is fully utilized, the denitrification rate of the biological aerated filter is improved, the treatment time can be greatly shortened under the same denitrification requirement, and the effect of rapidly treating overflow pollution in emergency is achieved.

The invention discloses an integrated device for coupling in-situ remediation and membrane filtration water purification of a reservoir water body, which realizes effective removal of pollutants such as ammonia nitrogen, iron, manganese and the like by fusing the advantages of a gravitational flow ultrafiltration (GDM) technology and a water-lifting aeration technology and utilizing the biochemical action of a biological filter cake layer of the GDM technology and an ultrafiltration membrane interception mechanism, so that the water body in-situ remediation and membrane filtration water purification of the reservoir can be realized. Meanwhile, by utilizing the in-situ remediation capability of a water lifting aeration technology, the ecological environment of a water body is improved, and the release of endogenous pollution is reduced; the device continuously runs for a long time under the designed flux, and the membrane pollution is controlled without adopting hydraulic backwashing and chemical agent cleaning, so that the use of chemicals is reduced from the source, pipelines, water pumps and valve accessories for backwashing and chemical cleaning are not needed, the cost can be effectively saved, and the workload of operation, operation and maintenance is greatly reduced; in addition, solar energy is adopted as a power source, green power supply is achieved, energy consumption is reduced, and negative effects on the environment are effectively relieved.

The invention relates to the technical field of water treatment, in particular to a prawn fry raw water biological filter treatment device. According to the technical scheme, the device comprises a pretreatment box, a disinfection box, an adjusting plate, a fine treatment box, a motor and a purification box, a screw is arranged at the output end of the motor, a nut in threaded installation with the screw is arranged at the upper end of the adjusting plate, the outer wall of the adjusting plate is sleeved with an air bag, an air pump is arranged at the upper end of the adjusting plate, and the air pump and the air bag are communicated and provided with an air supply pipe; a pressure relief valve is arranged in the air supply pipe, a disinfection box is arranged on one side of the lower portion of the fine treatment box, sealing gaskets are arranged on the inner wall of the fine treatment box and the outer wall of the purification box, overflow holes are formed in the side wall of the lower end of the purification box, and a filter material layer is arranged in the purification box. Through modular design, the efficiency and economical efficiency of prawn fry raw water treatment are remarkably improved, and the problems that a large-area biological filter cannot flexibly adjust the treatment capacity and is difficult to adapt to different scale requirements are solved.

The invention belongs to the technical field of wastewater treatment and recycling, and relates to a low-pressure ultrafiltration sewage treatment method and device based on bioelectrochemical enhancement and application. The treatment device consists of a water inlet tank, a constant water level water tank, a cathode, a resistor, a membrane assembly, a biological filter cake layer, a pre-filtering layer-anode, an ultrafiltration membrane, a water collecting device, a data acquisition module and a computer. The treatment device is used for treating effluent of a secondary sedimentation tank of a sewage plant and tail water of livestock and poultry breeding wastewater; on the basis of retaining nitrogen and phosphorus resources, deep removal of heavy metals and antibiotics is realized, propagation of resistance genes is inhibited, and safe reuse of nitrogen and phosphorus resources in effluent of sewage plants and tail water of livestock and poultry breeding wastewater can be realized. In the invention, low-pressure ultrafiltration adopts transmembrane pressure difference generated by gravitational potential energy to realize continuous flow filtration, coupled bioelectrochemistry utilizes electric energy generated by biodegradation of organic matters to realize reduction of heavy metals and deep removal of reinforced antibiotics, and the method has the advantages of greenness, low carbon and sustainability.

The utility model provides a biofilter filler support frame capable of being quickly installed, which belongs to the technical field of water treatment and comprises a base and a top plate, a bottom plate for placing a filter plate is arranged in the base, support plates for installing the filter plate are arranged on two sides of the bottom plate, and the support plates are also used for limiting the height of support columns. The four corners of the upper surface of the base are provided with inserting openings for fixing the supporting columns, the supporting columns for fixing and supporting the top plate are arranged in the inserting openings, the four corners of the lower surface of the top plate are provided with through openings for facilitating connection of the supporting columns and the positioning blocks, the through openings correspond to the inserting openings, and the tops of the supporting columns are provided with threaded holes for fixing the positioning bolts. A positioning block used for connecting and fixing the top plate and the supporting column is arranged at the top of the through opening, a threaded hole used for fixing a positioning bolt is formed in the positioning block in a penetrating mode, a positioning bolt used for connecting the positioning block and the supporting column is arranged in the threaded hole, and the positioning bolt is in threaded fit with the threaded hole.

The invention belongs to the technical field of waste gas pollution control, and particularly discloses and provides an efficient composite biological filter bed adaptive filler waste gas treatment method which comprises the step of forming a closed loop system through cooperative operation of a buffer adsorption layer, a biodegradation layer, humidity change signal adjustment and pH balance microsphere quadruple mechanisms. The physical layer buffers the impact load and keeps the airflow uniform; the biological level regulates and controls humidity and nutrients, and high activity of microorganisms is guaranteed; the chemical level immediately neutralizes the acidity and alkalinity of by-products. The humidity sensing film deforms to drive the valve clack to adjust waste gas flow in an unpowered self-feedback mode, the nutrition release layer continuously nourishes flora, and a stable ecological environment is provided for microorganisms through multiple protection. Through physical compression resistance, mechanical anti-blocking and dynamic acid-base balance, the capacity of the system for coping with complex working conditions is jointly improved, it can be ensured that pollutants are efficiently decomposed, the degradation rate continuously and stably exceeds a preset threshold value, and then it can be ensured that the long-term operation efficiency and structural integrity of the system are good.

The invention discloses a biological filter and a method for treating VOCs and malodorous gas.The biological filter comprises a second spraying cavity which is sequentially provided with a second water storage pond, a second gas distribution layer, a second filler layer and a second spraying layer from bottom to top, and the second filler layer is sequentially provided with a first movable strain biofilm culturing filler layer, a second movable strain biofilm culturing filler layer and a third movable strain biofilm culturing filler layer from top to bottom; and a plurality of stirring devices are arranged in the first movable strain biofilm culturing filler layer and the second movable strain biofilm culturing filler layer. According to the method, VOCs and malodorous gas are treated by using a biological filter. The biological filter disclosed by the invention has the advantages of high filler utilization rate, stable operation, low energy consumption, low operation cost, high treatment efficiency, good purification effect, long service life and the like, and can be widely applied to treatment of VOCs (Volatile Organic Compounds) and malodorous gases with different components in industrial factories, sewage treatment, food processing industries, garbage clearance and other scenes; vOCs and malodorous gas in waste gas can be effectively removed, and the air environment of polluted factories and living quarters can be improved.

The utility model relates to a garbage three-phase synchronous treatment system which comprises a garbage storage pool, a garbage transfer device, a primary screening mechanism, an ultra-high-temperature biological aerated filter and a secondary screening mechanism, and the primary screening mechanism comprises a shaftless screw feeder, a ball mill and a conical drum dewatering screen which are communicated with one another; the garbage transfer device is arranged between the garbage storage pool and the shaftless screw feeder, the ultra-high-temperature biological aerated filter is communicated with the conical drum dewatering screen, the secondary screening mechanism comprises a cyclone desander, a slurry dewatering screen and a screw squeezing dehydrator which are communicated with one another, the cyclone desander is communicated with the ultra-high-temperature biological aerated filter, and the slurry dewatering screen is communicated with the screw squeezing dehydrator. And the cyclone desander, the slurry dewatering screen and the screw squeezing dehydrator are all communicated with the shaftless screw feeder. According to the invention, the household garbage can be prepared into regenerated plastic particles or RDF fuel, can be used as asphalt and plastic filler, and can be used for producing various plastic profiles, road bricks and the like, so that the purposes of zero landfill and zero incineration are achieved, and the environmental benefit, the economic benefit and the carbon emission reduction effect are remarkable.

The utility model belongs to the technical field of sewage treatment, and particularly relates to a cleaning device of a biological aerated filter, which comprises a filter body, and one side of the filter body is provided with a drain outlet; the cleaning mechanism comprises a supporting frame, a scraping plate, a spraying assembly, a rotation driving assembly and a brush cylinder; the driving end of the transverse reciprocating driving mechanism is connected with the bottom of the vertical reciprocating driving mechanism, the driving end of the vertical reciprocating driving mechanism is connected with the top of the supporting frame, the rotating driving assembly is installed on the supporting frame, the driving end of the rotating driving assembly is connected with one end of the brush cylinder, and the top of the spraying assembly is connected with the supporting frame. The spraying assembly is located on the side, away from the sewage draining exit, of the brush cylinder, the spraying end of the spraying assembly faces the brush cylinder and inclines downwards, the upper end of the scraper is connected with the bottom of the spraying assembly, and the scraper is located on the side, away from the brush cylinder, of the spraying assembly; the liquid supply mechanism is arranged on the outer side of the filter tank body, the liquid supply end of the liquid supply mechanism is communicated with the liquid inlet end of the spraying assembly, and the scheme is high in cleaning efficiency.

The technical scheme of the utility model discloses a land-based canvas pool litopenaeus vannamei recirculating aquaculture system which comprises an aquaculture pool, and the edge of the bottom of the aquaculture pool inclines towards the center so as to enable aquaculture water and impurities to converge towards the center to a fish closestool. The settling pond is connected with an outlet of the fish closestool through a drainage pipe, and the fluidized bed is connected with the settling pond through a water guide pipe arranged at the water outlet channel; and the microfiltration part is connected with the fluidized bed and the culture pond through a water conduit and a water return pipe respectively. The bottom of the culture pond is inclined, water is drained from the center of the culture pond and enters the culture pond tangentially, so that vortexes are formed in the culture pond, and residual feed, excrement and the like are quickly concentrated towards the water outlet in the center of the bottom of the culture pond under the action of tangential force of water flow. Through a plurality of water inlet pipes and water outlet pipes, the effect of water quality circulation of the culture pond, the sedimentation pond, the fluidized bed biological filter and the rotary drum type micro-filter is achieved, and the problems that suspended solids and ammonia nitrogen are prone to being generated in a traditional prawn culture technology and the nitrite concentration is continuously increased are solved.

The invention relates to the technical field of biological filter groups, in particular to a low-energy-consumption high-efficiency urban and rural small and micro water body biological treatment device which comprises a sewage inlet pipe, a biological filter group and a sedimentation tank, the biological filter group comprises an anoxic and anaerobic tank, aerobic tanks and an adjusting tank, the aerobic tanks are arranged on the front side and the rear side of the anoxic and anaerobic tank, and the adjusting tank is arranged on the front side and the rear side of the anoxic and anaerobic tank. Regulating tanks are arranged on the left side and the right side of the anoxic and anaerobic tank; by arranging the biological filter tank group, the anoxic and anaerobic tank, the aerobic tank and the regulating tank, a one-step two-cycle treatment mode of sewage can be realized, the nitrogen and phosphorus removal efficiency of the sewage is greatly improved, the energy consumption and sludge output are reduced, the overall blockage risk of the system is reduced, the structure is compact, the occupied area is smaller, and the cost is reduced. The system is high in impact load resistance and meets the low-energy-consumption and efficient decontamination requirements of urban and rural small and micro water bodies.

The invention discloses a double-biological-membrane sewage treatment process for deep nitrogen and phosphorus removal coupled sludge reduction, and belongs to the technical field of sewage treatment. The process is composed of an anoxic biofilm reaction tank, an aerobic biofilm reaction tank and an iron autotrophic denitrification biofilter, and efficient nitrogen and phosphorus removal is performed on sewage through the double-biofilm sewage treatment process. Nitrogen and phosphorus removal and sludge in-situ reduction are mainly carried out in the front-end biological membrane reaction tank, and deep nitrogen and phosphorus removal is mainly carried out in the iron autotrophic denitrification biological filter tank. And the residual sludge is predded by using a protozoon / metazoon food chain of the aerobic biological membrane reaction tank, so that the effect of zero generation of the residual sludge is achieved. The concentration of iron ions is changed by adjusting the reflux ratio of iron-ion-containing reflux liquid generated by the iron autotrophic denitrification biofilter, so that the number and community structures of micro-organisms are effectively controlled, the control on sludge predation is further achieved, and the sludge reduction effect is improved. The process is obvious in effect, can stably operate for a long time and is suitable for engineering application.

The invention discloses an integrated household sewage treatment device, and relates to the technical field of sewage treatment, a tank body is internally provided with a pretreatment tank, an adjusting tank and a biological filter, the tank body is connected with a water inlet pipe at a position corresponding to the pretreatment tank, the water inlet pipe is used for introducing to-be-treated sewage into the pretreatment tank, the upper end of the pretreatment tank is communicated with the adjusting tank, and the lower end of the pretreatment tank is communicated with the biological filter; the pretreatment tank can discharge pretreated sewage into the adjusting tank, a water distribution element is arranged in the adjusting tank and can distribute the sewage entering the adjusting tank, a filter material element is arranged in the biological filter, and the upper end and the lower end of the biological filter can be communicated with the adjusting tank. The filter material element can be used for treating sewage in the biological filter tank, the treated water in the biological filter tank can enter the regulating tank, a water outlet pipe for discharging the treated sewage is arranged on the corresponding side wall of the tank body, and the water outlet pipe is arranged close to the upper end of the regulating tank. The sewage treatment device is simple in structure, convenient to operate and good in sewage treatment effect.

The invention belongs to the technical field of waste gas treatment, and particularly relates to biological deodorization equipment for waste gas of a sewage pool, which comprises a bracket seat, a heat preservation cylinder, a waste gas valve, a water filtering type gas transmission mechanism, an annular suction type deodorization mechanism and a water measuring type activity detection mechanism, the waste gas valve is arranged on the side, away from the support base, of the heat preservation cylinder in a communicating mode, the water filtering type gas conveying mechanism is arranged on the heat preservation cylinder, the annular suction type deodorization mechanism is arranged at the end, away from the waste gas valve, of the heat preservation cylinder, and the water measuring type activity detecting mechanism is arranged on the upper wall, below the annular suction type deodorization mechanism, of the support base. The water filtering type gas conveying mechanism comprises a gas filtering mechanism, a water feeding mechanism, a flow dividing mechanism, a heating mechanism and a temperature measuring mechanism. The invention provides the biological deodorization equipment for the waste gas of the sewage pool, which can be used for monitoring the purification state of the biological filter layer in real time, adjusting the temperature, the humidity and the gas inlet flow of the waste gas in time and ensuring the adsorption efficiency of the biological filter layer on the waste gas.

The utility model relates to the technical field of biological filters, in particular to a stainless steel biological filter structure which comprises a stainless steel tank body, a supporting layer and a water distribution pipe, the stainless steel tank body is of a rectangular shell structure; the water distribution pipe and the aeration pipe are respectively arranged below the supporting layer; the sludge guide plates are symmetrically welded and fixed on two sides of the bottom of the stainless steel tank body; the motor is fixed in the middle of the supporting plate through a screw, the stirring shaft is fixed on a rotating shaft of the motor to form a rotating device, and the stirring shaft is arranged in the biological filler; the cleaning pipes are symmetrically arranged on the two sides of the lower portion of the supporting plate, and the spray heads are arranged on the outer walls of the cleaning pipes and obliquely face the two sides. By improving the structure of the stainless steel biological filter tank, the stainless steel biological filter tank has the advantages that the biological filler is turned over in the stainless steel tank body, the cleaning efficiency is improved, and the biological filler cleaning effect is good, so that the problems and defects in the prior art and equipment are effectively solved.

The invention belongs to the technical field of biological filters, and relates to an anaerobic denitrification reactor and a method for accelerating degradation of nitrate nitrogen in micro-polluted water, and the reactor mainly comprises a biological filter, a water inlet tank, a peristaltic pump and a water outlet tank. The biological filter is composed of a filler composed of a modified polyvinylidene fluoride hollow fiber membrane and a high-temperature treatment iron wire, and the wastewater treatment process of the biological filter comprises a biofilm culturing stage and a domestication stage. In the biofilm culturing stage, the activated sludge enters the biofilter along with inlet water, and is loaded on the surface of membrane filaments to form a layer of biofilm; in the domestication stage, the wastewater slowly enters a biological filter and stays in a reactor, iron and nitrate nitrogen in the wastewater are subjected to denitrification reaction under the action of denitrifying bacteria, and the purpose of rapidly removing the nitrate nitrogen is achieved. According to the method, nitrate nitrogen in the wastewater can be rapidly reduced under the condition of not additionally adding a carbon source, so that the treatment process is low-carbon, aeration is not needed, energy is saved, and the method is suitable for industrial popularization.

The utility model relates to the technical field of sewage treatment equipment, in particular to an electrolytic biological filter system for rapid treatment of overflow pollution, which comprises a bioelectrochemical system and a biological aerated filter system, the bioelectrochemical system comprises a tank body I, a biological anode and a biological cathode are arranged in the tank body I, and the biological anode and the biological cathode are arranged in the tank body II. The biological anode and the biological cathode are connected to a power supply, the biological aerated filter system comprises a tank body II, sewage treated by the tank body I enters the tank body II, an aeration device, a filtering device and a clear water outlet device are arranged in the tank body II, and the biological electrochemical system is coupled with the biological aerated filter through the aeration device, the filtering device and the clear water outlet device. The electrolytic biological filter system for rapidly treating overflow pollution is formed, the rapid electron transfer characteristic of a bioelectrochemical system is fully utilized, the denitrification rate of the biological aerated filter is increased, the treatment time can be greatly shortened under the same denitrification requirement, and the effect of rapidly treating overflow pollution in emergency is achieved.

The utility model discloses a novel deodorizing biofilter structure, including: a pre-wash tank, a biofilter, a circulating water tank and a humidifying water tank, wherein a connecting air duct is fixedly connected between the pre-wash tank and the biofilter, an air distribution assembly is arranged at the bottom of the biofilter, the pre-wash tank and the biofilter are respectively filled with pre-wash tank fillers and biofillers, an air inlet pipe is fixedly connected to the pre-wash tank, and an air outlet pipe is fixedly connected to the biofilter. The utility model evenly arranges a plurality of air distribution branches, so that gas can evenly pass through the biofiller, thus avoiding the phenomenon of local collapse and hardening of the biofiller due to uneven air distribution, and can also serve as an aeration system to provide oxygen for the growth of microorganisms on the filler when necessary, thus avoiding the hardening and hardening of the filler in the filter, maintaining a suitable and stable living environment for the microorganisms inside the filler, achieving better deodorizing effect, more stable operation and longer service life.

The invention discloses a firework and cracker hazardous waste recovery treatment method and system, and the method comprises the following steps: a wastewater treatment step: the wastewater treatment step comprises a chemical precipitation step, an A2O biochemical treatment step, a Fenton oxidation step and a BAF biological filter step, and perchlorate, COD and heavy metal are removed; the waste residue treatment step comprises a wet grinding step, a high-temperature digestion step, a flotation step, a hydraulic cyclone separation step, a wet leaching step and a fractional precipitation step, and carbon powder, titanium, barium, aluminum and magnesium resources are recycled; according to a synergistic coupling mechanism, bottom slag generated in the wastewater treatment step is conveyed to the waste slag treatment step for treatment, and filtrate generated in the waste slag treatment step is conveyed to the wastewater treatment step for treatment. The method is used for carrying out harmless treatment and resource recycling on the hazardous wastes of the fireworks and crackers.